Bronzing-machine.



No. 653,952. Pa tented luly l7, I900. A. J. FOBD. BBUNZING MACHINE.

(Appl t man 7 1899) 4 Sheets-Sheat I.

(No Model.)

WITNESSES 45M A TTOHNE rs No. 653,952. Patented July I7, I900.

A. J. roan.

BRDNZING MACHINE.

(Application filed Nov. 7, 1899.)

(No Model.) 4 Sheets-Sheet 2.

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No. 653.952. Patented July 17,1900. A. J. FORD.

BBONZING MACHINE.

(Agplication filed Nov. 7; 1899.) N Mo m I 4 sheets-sheet 3,

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No. 653,952. Patented July 17, 1900.

A. J. FORD.

BRUNZING MACHINE.

(Application filed Nov. 7, 1899.) (No Mo el.) 4 Sheais Sheet 4.

A 770m Y8 Nrrm) STATES PATENT OFFICE.

AL BERT J. FORD, OF NEW YORK, N.. Y., ASSIGNOR TO THE FUCHS & LANG-MANUFAOTURING COMPANY, OF SAME PLACE.

BRONZINGPMACHINEE.

SPECIFICATION forming part of Letters Patent No. 653,952, dated July1'7, 1900. Application filed November 7, 1899:. Serial No. 736,093- (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, ALBERT J. FORD, a citi zen of the United States,residing in the city of New York, borough of Brooklyn, and State of NewYork, have invented certain new and useful Improvements inBronzing-Machines, of which the following is a specification.

This invention relates to certain improvements in bronzing-m achines forbronzing lith ographs and other sheet articles by which thebronze-powder is uniformly distributed over the parts to be bronzed,thoroughly rubbed in, and the surplus removed from the unbronzed orbronzed parts.

The invention consists of a bronzing-machine which comprises abronze-hopper, a distributing-roller below the same, means for feedingthe sheet or plate forward, a rubbingbrush adjacent to saiddistributing-roller, a frame for supporting said brush, means forimparting a gyratory motion to said brush, said means comprisingvertical shafts journaled in said frame and provided with eccentricportions journaled in bearings of the brush-back, a transverse shaftjournaled in bearings of said frame, bevel gearing connecting thetransverse and vertical shafts, means for rotating said transverseshaft, and dusting means beyond the rubbing-brush.

In the accompanying drawings, Figure 1 represents a side elevation of myimproved bronzing-machine. Fig. 2 is a vertical longitudinal section ofthe same drawn on a larger scale. Fig. 3 is a plan view of the machine;and Fig. 4C is a detail vertical transverse section, drawn on a largerscale, on line 4 4, Fig. 2, parts being in elevation and showing therubbing-brush.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the supporting-frame of myimproved bronzingmachine for lithographs, 850. At the ingoing end of themachine is arranged an inclined feed-table B, formed of a number ofparallel longitudinal slats b, on which the lithographic sheets, plates,signs, or other sheet articles to be bronzed are placed. Parallel withthe inclined feed-table Bis arranged a reciprocating rod 0, which isguided in a suitable keeper (Z at the under side of the tashank on thereciprocating rod C, so that one ating parts of the bronzing-machine.

ble, said rod being connected with the shank e of a pusher D, which isreciprocated upon the feed-table and which is adjusted by its sheetafter the other may be fed to the oper- The reciprocatingpusher-operating rod 0 is connected by a short pivot-link c with aleverarm 0, which is fulcrumed to a transverse 6o The lever-arm O isconnected above its fulcrum with a slotted connectingrod 0 which isguided byits slotted portion upon the driving-shaft S and provided withan antifriction-roller 7, that moves along a cam r on the driving-shaftS. The cam 1" is so shaped that an oscillating motion is imparted to thelever-arm C, so as to reciprocate the rod O of the pusher D to therequired extent.

At the middle portion of the supportingframe of the machine is arrangeda bronzehopper E, of the usual construction, which is supplied withbronze-powder, said powder being transmitted by a distributing-roller E,covered with plush or other suitable soft material, to the paper sheetsor signs or tin or other metal plates that are moved over the feed-tableby 'the pusher D. Intermittent or step-by-step rotary motion is impartedto the distributing-roller E by a cam and suitable transmittingmechanism from the drivingshaft S, as shown in dotted lines in Fig. 2,preferably by a ratchet-and-pawl device M, which is operated by apivoted lever M and actuating-cam M Adjacent to the bronze-hopper E andits distributing-roller E is arranged a rubbingbrush F,which consists oftwo parallel brushes ff, which are attached to a suitable back f. Aframe F is supported on brackets f of the side standards of the machineand is adjusted by means of set-screws f relatively to the surface to bebronzed. A gyrating motion is imparted to the rubbing-brushes f by atransverse shaft j, that is driven by a belt-andpulley transmission N NN and a gearwlieel-and-pinion transmission P P from the driving-shaft S.The shaft f transmits rotary motion by bevel-gears f f to short verticalshafts f which turn in bearings f of the frame F. The shafts f. areconnected by eccentric shafts f with bearings f on the 'brush-back f, sothat a gyrating motion is imparted to the same and the brushes, andthereby a rubbing action exerted on the bronzed surfaces. By the rubbingaction of the brushes the bronze-powder is uniformly rubbed over thesized portions of the surfaces of the sheets and incorporated with thesame. The sheet or plate is then conducted from the rubbing-brushforwardly between a series of feed-rolls G and over stationary tables g,between said feed-rolls, and is acted upon by a number of so-calleddusting-rolls H, which are formed of suitable material and which removethe bronze-powder from the unsized portions of the surfaces. Thefeedrolls G are all turned in the same direction by means of a series ofintermeshing pinion and gear wheels 0 O 0 while the dustingrolls Hreceive rotary motion in opposite direction thereto by means of abelt-and-pulley transmission T T, an auxiliary shaft S, to which rotarymotion is transmitted from the intermediate shaft S and gear-wheels Vand pinion V, as shown in Fig. 1. The transmitting gear-wheels 0 turnloosely on the shafts of the dusting-rolls H, so as not to afiect thelatter. The shafts of the dusting-rolls H are supported injournal-beariu gs H which are capable of adjustment, so that the dustin-rolls can be accurately adjusted to the sheets or plates to be bronzed.The first two dusting-rolls receive direct rotary motion by abelt-and-pulley transmission from the auxiliary shaft S at one side ofthe machine, as shown in Fig. 1, while the remaining dusting-rolls arerotated by a beltand-pulley transmission at'the other side of themachine, but from the same auxiliary shaft. Below the last dusting-rollis arranged a second dusting-roll H, which removes any powder that mayhave passed to the under side of the sheet. The dusting-rolls areinclosed by a suitable sheet-metal casing I, which is hinged at itsouter end at i to the end of the supporting-frame A and which is liftedinto upright-position by means of a chain W whenever it is desired toobtain access to the dusting-rolls for adjusting, cleaning, or repairingthe same. To the inside of the casing I are applied partitions I, thatextend downwardly over the dusting-rolls, so as to prevent thebronze-powder from being passed over to the adjacent precedingdusting-roll or feed-rollers. The casing is provided at its outgoing endwith an inclined wall 1 that extends toward the last set offeed-ro1ls,'as shown in Fig. 2.

The bronze-hopper, with its distributingbrush, as well as thefeed-rollers and dustingrolls, are well known and I do not claim thesame; but I do claim the rubbing-brush adjacent to the distributingbrush and the mechanism for imparting gyrating motion thereto and bywhich the bronze-powder is rubbed into the sized portion of the surfacesof the sheets or plates to be printed,

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a bronzing-machine, the combination,

with the bronze-hopperand distributing roller below the same, of meansfor feeding the sheet or plate forward, a rubbing-brush adjacent to saiddistributing-roller, a frame for supporting said brush, means forimparting- ALBERT J. FORD.

Witnesses:

PAUL GOEPEL, M. H. WURTZEL.

